overhaul tests

test/utils.ts

@@ -0,0 +1,23 @@
+import * as fs from 'fs';
+import * as path from 'path';
+
+export function wait(ms: number) {
+	return new Promise(fulfil => setTimeout(fulfil, ms));
+}
+
+export function walk(cwd: string, dir = cwd, files: string[] = []) {
+	fs.readdirSync(dir).forEach(file => {
+		const resolved = path.resolve(dir, file);
+		if (fs.statSync(resolved).isDirectory()) {
+			walk(cwd, resolved, files);
+		} else {
+			files.push(posixify(path.relative(cwd, resolved)));
+		}
+	});
+
+	return files;
+}
+
+function posixify(str: string) {
+	return str.replace(/\\/g, '/');
+}